[Cryptography] PRISM-Proofing and PRISM-Hardening

Viktor Dukhovni cryptography at dukhovni.org
Wed Sep 18 16:47:17 EDT 2013

On Wed, Sep 18, 2013 at 08:04:04PM +0100, Ben Laurie wrote:

> > This is only realistic with DANE TLSA (certificate usage 2 or 3),
> > and thus will start to be realistic for SMTP next year (provided
> > DNSSEC gets off the ground) with the release of Postfix 2.11, and
> > with luck also a DANE-capable Exim release.
> What's wrong with name-constrained intermediates?

X.509 name constraints (critical extensions in general) typically
don't work.


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